Question

In 8 years Jack will be three times as old as he is now. How old is he now?

Answer 1

4 y/o

Explanation:

x = age now

add 8 years

x+8 and this equals 3 times as old as he is now, or 3x

x+8 = 3x subtract 'x' from both sides

8 = 2x divide both sides by 2

x = 4 y/o

Answer 2

4 years old

Explanation:

3x = x + 8

2x = 8

x = 4